Knocked-down spool



Dec. 25, 1934. .1. H. KJELLSTROM KNOCKED DOWN SPOOL Filed July 16, 1931 Ill villi/l Patented Dec. 25, 1934 t t UNITED STATES PATENT OFFICE K woc Ep-DoW sPooL John H. Kjellstromg Rockford, 1 11;, assignor'to J. L. Clark Manufacturing 00.," Rockford, 111., a corporation of j Application July 16, 1931, Serial N0. 551,134

' 20' Claims. cram-'12s) The invention relates to spools or reels of the adapted for subsequent attachment by the user type which is adapted for shipment in knockedto the ends of tubular cores. As shown, the down form and the objectof the invention is to heads 11 are constructed to provide fastening deprovide a spool having an improved mode of vices in the form of clips 13 on the head, which I fastening the heads thereof onto the ends of a clips in this instance, are in holding relation to 6 tubular body or core, by means .of simple con the head bybeing formed integral therewith. In struction capable of being produced at a low cost forming such clips, tongues 14 and 15 are cut out and adapted for easy and convenient application of the metal of the head on opposite sides of a without the aid of expensive tools or equipment. central web 16, the metal of the head being suit- 7 A further object is to provide head fastening ably slit to form each of the tongues. Each of 10 means of the character above set forth, in the the tongues, moreover, is bent at its free end into form of a plurality of devices formed of sheet a plane substantially perpendicular to the disk metal and adapted tobe secured to the core by to form prongs l7. means of a tool entered through apertures in It will be observed from the form of the clips 16 the head. shown in, the case of the lower head in Fig. 1, that The objects of the invention thus set forth toas an incident to the formation of the prongs 17 gether with other and ancillary advantages are the clips are made of channel shape, and are so obtained by the construction and arrangement positioned as to be adapted to straddle the end of shown in the accompanying drawing forming a the core to which the head is to be applied, with 20 part hereof, in which: such end of the core bearing against the inner 20 Figure 1 is a longitudinal sectional view through side of the web 16. The clips thus serve to f acilithe parts of a spooLiOne headbeing attached and tate the properpositioningof the head onto the the other shown in position ready for attach-, end of the core;

ment. V t Y The operation. of securing the heads in position Fig. 2 is a fragmentary plan view of one of the on theends of. the core is illustrated in Fig. 1 25 heads before attachment to the core. j wherein I have shown a suitable tool in dotted out- Fig. 3 is a fragmentary central longitudinalsec line. This tool is in the form of ordinary pincers tional view showing a modified form of fastening having jaws a and af, the ends ,of which are means, and taken. approximately in the plane of adapted to engage the tongues 14 and 15 simulline 33 of Fig. 14. y tah'eously and tobend thesame toward each other 3 Fig. 4is a fragmentary end elevational view of when an endwiseforce is exerted onthe tool. the form shown in Fig. 3. f Finally the tool is operated to force the jaws a and Fig. 5 is a fragmentarylongitudinal sectional a together, andinf this operation the prongs 1'7 view similar to Fig. l'but showing still another on each of'the ,ton'gues'are forced into the matemodification, the View being taken approxi'mately rialof the core at opposite sides thereof. It will in the plane of line 5: 5 of Fig. 6. v be observed that one of the tongues, herein the Fig. 6 is a fragmentary end View showing the tonguej l i, inade'somewhat shorter than the head attached. 1 Y otherfoiieis that the opposite prongs 1'7. of each Fig. 7 is a fragmentary longitudii ral sectional clipw'ill occupy offset relation to each other as 40 view taken 'approximately in the-plane i of line? shownclea'rly in Fig; 1.. 40 7-7 of Fig. 8 and showing still another modifi- Referring now 'to the construction shown in cation. a A 7 Figs. 3 and 4, the head in this instance comprises Fig. 8 is a fragmentaryend viewfurther, il1us-, two plates, oneinthe form of a disk 18 having a trating the construction shown inFig. 7.; central aperture of a diameter corresponding to Referring first to Figs-1 and 2 of the drawing, the internal diameter of the core 10; and the other 45 the spool comprises aitubular core 10 preferably in the form'of a central plug 19 having an upformed of pasteboard'or other fibrous material, Sta ding pe p flange 20 curled outwardly a and heads 11 in the form of 'flat'circular plates it's'upper'edge to form an annular bead 21 adapted or disks preferably of metal and having peripheral tooverlie the inner peripheral edge of the disk 18,

strengthening curls 12. The disks are provided on the head, formed integral with the flange 20 50 with the usual central apertures for mounting are, a plurality of tongues 22, the free ends of purposes. I which are provided with prongs 23. Opposite The heads 11 are adapted to be suppliedby the these tongues 22 are slots 24 cut in the disk 18 and manufacturer in the form shown thefcas'eiof" extending radially outwardly from the outer the lower head in Fig. 1', in which form they are peripheral edge of the core 10. 55

It will be seen that by the use of a suitable tool such as that shown in Fig. 1, each tongue 22 may be forced easily through its slot 24 and bent into engagement with the outer periphery of the core, finally embedding the anchoring prong 23 in the material of the core; and it is to be observed that each of said tongues 22 coacts with the opposite flange 20 and with the outwardly turned bead 21 to form in effect a U-shaped fastening clip on andin holding relation to the head, which clip, when secured to the core as above described, serves to hold the head against axial or lateral movement.

In the form shown in Fig. 5, the fasteningmeansz is generally similar to that shown in Figs. 1 and 2 except that in this instance U'-sha-ped clips 25 are formed separately from the head. Thus they have tongues 26 and 27 connected by a yoke portion 28; and the head is formed with slots-29mm 30 through which the tongues 26 and 27 maybe inserted. These slots are separated by-a central web 31 adapted to engage with the-end edge of the core. The yoke portion 28 ofv the clip rests on or engages with the web and is thus in holding rela-- tion to or anchored on the head. In this instance, the disk 11' forming the head has a central depression forming an annular shoulder 32 for the purpose of centering the head upon the core preliminary to the operation of securing the head in place.

In the embodiment illustrated in Figs. 7 and 8; clips generally designated 33 are similar to those illustrated in connection withFigs. 5 and 6 except that the yoke portion 34 has a pair of oppositely extending wings 35 formedintegral therewith and arranged to project beyond'the opposite sideedges of a slot 36 formed in the head and; extending on opposite sides of the end ofthecore' 10 in holding relation to the head. The clip is adapted to be in= serted through the slot 36with its tongues 3'!- and- 38 straddling the end of the core and its wings 35 overlying the face of the disk at opposite sides 'of the slot 36; Thus it will be observed thatwhen' the tongues and their anchoring portions are forced into engagement with the core by a tool inserted through the opposite endsof the sl'ot36, the head will be securedfirmlyto-the end of the core.

I claim as my invention:

1. A spool having a tubular core, a head plate adapted to overlie one end edge of the core-and having a plurality of slots adjacent the core; and a plurality of fastening clips formed integral with said plate and having radially spaced" portions inserted through said slots and embedded in" the material of the corewith said portions disposed parallel to the axis of the core.

2. A spool having a tubular core, a head'plate' adapted to overlie one end edge of the core, and a plurality of U-shaped' fastening clips having yoke portions integral with said plate and legs having prongs engaging in the material of the core at opposite sidesthereof.

3. A spool having a tubular core, a head bearing on one end edge of the core,,and. a plurality of fastening devices each in the form of a substantially U-shaped clip anchored to the head. and straddling the end of the core, the legsof each clipbeing of different lengths. and eachhaving an. anchoring prong embedded in the material of the core.

4. A spool having, a tubular core, ahead bearing on one endedge of the core, and a plurality of fastening devices each in. the form of a substantially U -shaped clip anchored to the head and straddling the end of the core, the legs of eachv clip being of dliferent lengths and having anchoring prongs embedded in the material of the core and disposed in offset relation with respect to each other.

5. A spool having a tubular core, a head in the form of a plate overlying one end edge of the core, and means for securing the head onto the core includinga U-shapedfastening clip formed integral with the plate and having portions straddling the end of the corean'd secured thereto, said plate being slotted to permit of access to said legs by means of a tool for forcing said legs intoholdingzengagement with the core.

6. A spool having a tubular core, a head in the form-ofa-plateoverlying one end edge of the core, and: means for" securing the head onto the core including a separately formed fastened clip havingahportion overlying the head and a part secured to. the wall of the core, said plate being slotted on one side of the wall of the core to permit of access to saidpart by means-of a. tool.

7. A spool having .a tubular core, a head bearingon one end edge of the core, and means for fastening the head onto the core comprisinga plurality of U-shaped'. clips formed separately from the head and secured to the material of the core, saidlclips being adapted to straddle the end of the core, and said head having slots extending transversely from opposite sides of the core wall through which the jaws of a tool ofv the pincer type may be inserted. in securing said legs to the core.

8'. A spool having a tubular core, a head bearing. onone end edge ofthe core, and means for fastening the head onto the core comprising. a plurality of U-shaped clips formed separately from the. head and secured to the material oi the core, said. clips being adapted to straddle the end ofthe core and said headhaving slots extending transversely from opposite sides of the core through which the jaws of a tool of the pincer type maybe inserted in securing said legs to the. core wall, and said head having a web portion intermediate each pair of slots and bearing. against the end. edge of the core with the yoke portion of each clip engaging with said web portion. 1

9. A spool having atubular core, a headin the form of adisk bearing upon one end edge of the core, and means for fastening the head onto the core comprising a substantially U-shaped clip and having legs engaging opposite sides of the core, said disk. being. slotted radially in opposite directions from the wall. of the core to receive legs-and; said clip. having a yoke portion in holding relation to the head. 1

10. A- spool having, a tubular core; a head comprising a plate centrallyapertured with its inner peripherali edge portion overlying. the end of the core, said head iurther'c'omprisingza plate having: a peripheraliiiangeainsertedv the aperture in the first mentioned plate and fitting snugly in: the endloi th'e'core, andiaplurailityof fastening clips formedi integral with said flange and bent into opposed relation thereto intoengaging relation'with theouter' sideofthe core; the first men tioned' plate having slots therein through which the-clipsmay pass:

11. A spoolhavin'gatubular core, ahead comprising two plates, one extending radially outwardly from the core and the other being disposed within the core, one, of saidplates having formed integral therewitha plurality of fastening devices engagingwith' said core',,the other one of? said. plates having slots for receiving said fastening devices.

12. In the manufacture of spools of the knocked-down type having a tubular core and a head to be secured on the end thereof, the method of fastening the head onto the core which consists in forming slots in the head so disposed that when the head is placed on the core the slots extend radially from the ends thereof, and then inserting a tool of the pincer type through each slot to force a fastening device on the head through the slot and into holding relation to the core.

13. In the manufacture of spools having a tubular core and a head to be secured on one end thereof, the method of fastening the head which consists in slotting the head to form openings on opposite sides of the core wall when the head is placed thereon, and then inserting a pincer-like tool through said slots to force radially spaced anchoring elements on the head into holding engagement with the material of the core.

14. In the manufacture of spools of the character set forth having a tubular core and a head in the form of a disk adapted to bear against the end of the core, the method of fastening the disk onto the core which consists in cutting out from the material of the head portions disposed on opposite sides of the wall of the core, and inserting a tool of the pincer type through the slots while forcing the cut-out portions into holding engagement with the end of the core.

15. In the manufacture of spools of the character set forth having a tubular core and a head in the form of a disk adapted to bear against the end of the core, the method of fastening the disk onto the core which consists in cutting out from the material of the head portions disposed adjacent the end of the core, and inserting a tool of the pincer type through each slot to force the cut-out portion into holding engagement with the core.

16. A spool having a tubular core, a head bearing on one extreme, end edge of the core, and means for securing the head in position on the core including a plurality of fastening devices each comprising a pair of radially spaced fastening elements directly engaging the inner and outer sides of the core inwardly of said head and in straddling relation to the end of the core, said head having radial slots adjacent the outer fastening elements.

17. A spool having a tubular core, a head bearing on one extreme end edge of the core, and meansfor securing the head in position on the core including a plurality of fastening devices each comprising a pair of radially spaced fastening elements directly engaging the inner and outer sides of the core inwardly of said head and in straddling relation to the end of the core, said head having slots adjacent the fastening elements and extending both inwardly and outwardly radially of the core.

18. A spool having a tubular core, a head bearing on one extreme edge of the core, and means for securing the head in position on the core including radially spaced fastening elements straddling the core wall and respectively engaging with the inner and outer sides of the core wall inwardly of said head.

19. A spool having a tubular core, a head bearing on one edge of the core, and means for securing the head in position on the core including radially spaced fastening elements straddling the core wall and extending inwardly from said head varying distances in a direction perpendicular thereto and respectively engaging with the inner and outer sides of the core wall at one end thereof, said elements having anchoring prongs at their inner ends.

20. A spool having a tubular core, a head including a plate having an inner surface with which the extreme end edge of the core is adapted to abut, and means for securing the head to the core at a plurality of points circumferentially of the core and including radially spaced members straddling the core wall and respectively engaging the inner and outer sides of said wall, certain of said members being in the form of fastening elements adapted to be bent laterally into engagement with the outer side of the core at circumferentially spaced points, and said plate having slots therein extending radially from the core adjacent said fastening elements to permit of access to the latter from the outer side of the plate.

JOHN H. KJELLSTROM. 

